Title: wp-includes/deprecated.php | Page 3 of 9 | Developer.WordPress.org --- # File: wp-includes/deprecated.php * hook[updated_usermeta](https://developer.wordpress.org/reference/hooks/updated_usermeta/) * Used by [0 functions](https://developer.wordpress.org/reference/hooks/updated_usermeta/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/updated_usermeta/#uses) | Source: [wp-includes/deprecated.php:2410](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L2410-L2410) * hook[deleted_usermeta](https://developer.wordpress.org/reference/hooks/deleted_usermeta/) * Used by [0 functions](https://developer.wordpress.org/reference/hooks/deleted_usermeta/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/deleted_usermeta/#uses) | Source: [wp-includes/deprecated.php:2300](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L2300-L2300) * hook[update_usermeta](https://developer.wordpress.org/reference/hooks/update_usermeta/) * Used by [0 functions](https://developer.wordpress.org/reference/hooks/update_usermeta/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/update_usermeta/#uses) | Source: [wp-includes/deprecated.php:2395](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L2395-L2395) * hook[attachment_icon](https://developer.wordpress.org/reference/hooks/attachment_icon/) * Used by [0 functions](https://developer.wordpress.org/reference/hooks/attachment_icon/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/attachment_icon/#uses) | Source: [wp-includes/deprecated.php:2006](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L2006-L2006) * function[add_option_whitelist()](https://developer.wordpress.org/reference/functions/add_option_whitelist/) * Adds an array of options to the list of allowed options. * Used by [0 functions](https://developer.wordpress.org/reference/functions/add_option_whitelist/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/add_option_whitelist/#uses) | Source: [wp-includes/deprecated.php:4089](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L4089-L4093) * function[remove_option_whitelist()](https://developer.wordpress.org/reference/functions/remove_option_whitelist/) * Removes a list of options from the allowed options list. * Used by [0 functions](https://developer.wordpress.org/reference/functions/remove_option_whitelist/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/remove_option_whitelist/#uses) | Source: [wp-includes/deprecated.php:4106](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L4106-L4110) * function[current_user_can_for_blog()](https://developer.wordpress.org/reference/functions/current_user_can_for_blog/) * Returns whether the current user has the specified capability for a given site. * Used by [0 functions](https://developer.wordpress.org/reference/functions/current_user_can_for_blog/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/current_user_can_for_blog/#uses) | Source: [wp-includes/deprecated.php:6419](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L6419-L6421) * function[_usort_terms_by_name()](https://developer.wordpress.org/reference/functions/_usort_terms_by_name/) * Sort categories by name. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_usort_terms_by_name/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_usort_terms_by_name/#uses) | Source: [wp-includes/deprecated.php:3893](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3893-L3897) * function[_usort_terms_by_ID()](https://developer.wordpress.org/reference/functions/_usort_terms_by_id/) * Sort categories by ID. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_usort_terms_by_id/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_usort_terms_by_id/#uses) | Source: [wp-includes/deprecated.php:3868](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3868-L3877) * function[preview_theme()](https://developer.wordpress.org/reference/functions/preview_theme/) * Start preview theme output buffer. * Used by [0 functions](https://developer.wordpress.org/reference/functions/preview_theme/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/preview_theme/#uses) | Source: [wp-includes/deprecated.php:3509](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3509-L3511) * function[_preview_theme_template_filter()](https://developer.wordpress.org/reference/functions/_preview_theme_template_filter/) * Private function to modify the current template when previewing a theme * Used by [0 functions](https://developer.wordpress.org/reference/functions/_preview_theme_template_filter/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_preview_theme_template_filter/#uses) | Source: [wp-includes/deprecated.php:3522](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3522-L3525) * function[_preview_theme_stylesheet_filter()](https://developer.wordpress.org/reference/functions/_preview_theme_stylesheet_filter/) * Private function to modify the current stylesheet when previewing a theme * Used by [0 functions](https://developer.wordpress.org/reference/functions/_preview_theme_stylesheet_filter/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_preview_theme_stylesheet_filter/#uses) | Source: [wp-includes/deprecated.php:3536](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3536-L3539) * function[preview_theme_ob_filter()](https://developer.wordpress.org/reference/functions/preview_theme_ob_filter/) * Callback function for ob_start() to capture all links in the theme. * Used by [0 functions](https://developer.wordpress.org/reference/functions/preview_theme_ob_filter/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/preview_theme_ob_filter/#uses) | Source: [wp-includes/deprecated.php:3551](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3551-L3554) * function[preview_theme_ob_filter_callback()](https://developer.wordpress.org/reference/functions/preview_theme_ob_filter_callback/) * Manipulates preview theme links in order to control and maintain location. * Used by [0 functions](https://developer.wordpress.org/reference/functions/preview_theme_ob_filter_callback/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/preview_theme_ob_filter_callback/#uses) | Source: [wp-includes/deprecated.php:3568](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3568-L3571) * function[like_escape()](https://developer.wordpress.org/reference/functions/like_escape/) * Formerly used to escape strings before searching the DB. It was poorly documented and never worked as described. * Used by [1 function](https://developer.wordpress.org/reference/functions/like_escape/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/like_escape/#uses) | Source: [wp-includes/deprecated.php:3468](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3468-L3471) * function[wp_htmledit_pre()](https://developer.wordpress.org/reference/functions/wp_htmledit_pre/) * Formats text for the HTML editor. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_htmledit_pre/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/wp_htmledit_pre/#uses) | Source: [wp-includes/deprecated.php:3629](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3629-L3644) * hook[htmledit_pre](https://developer.wordpress.org/reference/hooks/htmledit_pre/) * Filters the text before it is formatted for the HTML editor. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/htmledit_pre/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/htmledit_pre/#uses) | Source: [wp-includes/deprecated.php:3643](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3643-L3643) * hook[richedit_pre](https://developer.wordpress.org/reference/hooks/richedit_pre/) * Filters text returned for the rich text editor. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/richedit_pre/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/richedit_pre/#uses) | Source: [wp-includes/deprecated.php:3605](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3605-L3605) * function[popuplinks()](https://developer.wordpress.org/reference/functions/popuplinks/) * Adds element attributes to open links in new tabs. * Used by [0 functions](https://developer.wordpress.org/reference/functions/popuplinks/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/popuplinks/#uses) | Source: [wp-includes/deprecated.php:3791](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3791-L3795) * function[wp_richedit_pre()](https://developer.wordpress.org/reference/functions/wp_richedit_pre/) * Formats text for the rich text editor. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_richedit_pre/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/functions/wp_richedit_pre/#uses) | Source: [wp-includes/deprecated.php:3586](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3586-L3614) * function[addslashes_gpc()](https://developer.wordpress.org/reference/functions/addslashes_gpc/) * Adds slashes to a string or recursively adds slashes to strings within an array. * Used by [0 functions](https://developer.wordpress.org/reference/functions/addslashes_gpc/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/addslashes_gpc/#uses) | Source: [wp-includes/deprecated.php:6503](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L6503-L6506) * function[wlwmanifest_link()](https://developer.wordpress.org/reference/functions/wlwmanifest_link/) * Displays the link to the Windows Live Writer manifest file. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wlwmanifest_link/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wlwmanifest_link/#uses) | Source: [wp-includes/deprecated.php:4651](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L4651-L4653) * function[noindex()](https://developer.wordpress.org/reference/functions/noindex/) * Displays a `noindex` meta tag if required by the blog configuration. * Used by [0 functions](https://developer.wordpress.org/reference/functions/noindex/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/noindex/#uses) | Source: [wp-includes/deprecated.php:4160](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L4160-L4167) * function[wp_no_robots()](https://developer.wordpress.org/reference/functions/wp_no_robots/) * Display a `noindex` meta tag. * Used by [1 function](https://developer.wordpress.org/reference/functions/wp_no_robots/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/wp_no_robots/#uses) | Source: [wp-includes/deprecated.php:4182](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L4182-L4191) * function[rich_edit_exists()](https://developer.wordpress.org/reference/functions/rich_edit_exists/) * Determine if TinyMCE is available. * Used by [0 functions](https://developer.wordpress.org/reference/functions/rich_edit_exists/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/rich_edit_exists/#uses) | Source: [wp-includes/deprecated.php:3418](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3418-L3426) * function[default_topic_count_text()](https://developer.wordpress.org/reference/functions/default_topic_count_text/) * Old callback for tag link tooltips. * Used by [0 functions](https://developer.wordpress.org/reference/functions/default_topic_count_text/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/default_topic_count_text/#uses) | Source: [wp-includes/deprecated.php:3438](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3438-L3440) * function[format_to_post()](https://developer.wordpress.org/reference/functions/format_to_post/) * Formerly used to escape strings before inserting into the DB. * Used by [0 functions](https://developer.wordpress.org/reference/functions/format_to_post/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/format_to_post/#uses) | Source: [wp-includes/deprecated.php:3453](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3453-L3456) * function[gd_edit_image_support()](https://developer.wordpress.org/reference/functions/gd_edit_image_support/) * Check if the installed version of GD supports particular image type * Used by [0 functions](https://developer.wordpress.org/reference/functions/gd_edit_image_support/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/gd_edit_image_support/#uses) | Source: [wp-includes/deprecated.php:3331](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3331-L3362) * function[wp_convert_bytes_to_hr()](https://developer.wordpress.org/reference/functions/wp_convert_bytes_to_hr/) * Converts an integer byte value to a shorthand byte value. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_convert_bytes_to_hr/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_convert_bytes_to_hr/#uses) | Source: [wp-includes/deprecated.php:3374](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3374-L3390) * function[_search_terms_tidy()](https://developer.wordpress.org/reference/functions/_search_terms_tidy/) * Formerly used internally to tidy up the search terms. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_search_terms_tidy/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_search_terms_tidy/#uses) | Source: [wp-includes/deprecated.php:3402](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L3402-L3405) [Previous 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